SQUARE BAR GRINDING DEVICE

Abstract

A square bar grinding device includes a loading rack, a clamping device, a grinding device, and a grinding tool grinding device. The loading rack is provided with stations, the stations include a first station and a second station, the first station is used for placing a to-be-machined square bar, the grinding tool grinding device includes an oil stone assembly, the oil stone assembly is disposed at the second station, and the clamping device is used for clamping and transferring the to-be-machined square bar or the oil stone assembly in the stations of the loading rack to the grinding device. According to the square bar grinding device, a grinding tool grinding device is disposed at a loading rack, and can be clamped and transferred by a clamping device to be quickly moved to a grinding device for grinding of a grinding tool.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to Chinese Patent Application No. 202322756759.X, filed on Oct. 13, 2023, the content of which is incorporated herein by reference in its entirety.

TECHNICAL FIELD

The present disclosure relates to the field of bar grinding machining, in particular to a square bar grinding device.

BACKGROUND

In a current square bar grinding system, a loading rack, a clamping device and a grinding device are generally used in cooperation to achieve the processes of loading, grinding, unloading, etc. of square bars. A grinding tool grinding device needs to be correspondingly provided for a grinding tool of the grinding device to grind the grinding tool, so as to ensure the machining accuracy. In the prior art, for a horizontal machine tool, it is common to directly provide an oil stone for grinding at the clamping device of the square bar grinding system, and another transmission mechanism different from conventional grinding machining is provided, so that the oil stone disposed at the grinding device may cooperate with the grinding tool to carry out grinding. For a vertical machine tool, a mounting bracket with the oil stone needs to be manually transferred to the grinding tool to carry out grinding. In the above solutions, the oil stone is not convenient to arrange, and it is dangerous for an operator to maintain and replace the oil stone at the grinding device; and the transmission mechanism corresponding to the oil stone needs to be configured additionally, which makes the design relatively complicated.

SUMMARY

The technical problem to be solved by the present disclosure is to provide a square bar grinding device which is simple in structure and may be subjected to grinding maintenance conveniently.

In order to solve the above technical problem, the technical solution adopted in the present disclosure is: A square bar grinding device includes a loading rack, a clamping device, a grinding device, and a grinding tool grinding device, wherein the loading rack is provided with stations, the stations include a first station and a second station, the first station is used for placing a to-be-machined square bar, the grinding tool grinding device includes an oil stone assembly, the oil stone assembly is disposed at the second station, and the clamping device is used for clamping and transferring the to-be-machined square bar or the oil stone assembly in the stations of the loading rack to the grinding device.

Further, the oil stone assembly includes oil stones and a mounting seat, and the oil stones are removably disposed on the mounting seat.

Further, the mounting seat has two mounting surfaces perpendicular to an upper end surface of the loading rack and parallel to two side surfaces of square bars on adjacent stations, and the oil stones are disposed on the mounting surfaces.

Further, the oil stone assembly further includes fixing seats, the fixing seats are locked onto the mounting surfaces, fixing grooves are provided in middle portions of the fixing seats, and the oil stones are disposed in the fixing grooves.

Further, the oil stone includes a first oil stone and a second oil stone, the first oil stone with a length direction being perpendicular to a length direction of the square bar is disposed on one of the mounting surfaces, and the second oil stone with a length direction being parallel to the length direction of the square bar is disposed on the other of the mounting surfaces.

Further, the mounting seat is a cuboid.

Further, the second station is provided with two guide plates, and the two guide plates abut against the two mounting surfaces of the mounting seat respectively.

Further, the second station is provided with an adjustment device and an abutting plate at two ends in a length direction of the mounting seat respectively, one end of the adjustment device is capable of moving towards one end in the length direction of the mounting seat, and the abutting plate abuts against the other end in the length direction of the mounting seat.

Further, the grinding device includes a grinding assembly and a sensing assembly, the sensing assembly is disposed on an upper side of the grinding assembly, the sensing assembly is capable of moving on a machining surface of the grinding assembly, the grinding assembly includes a grinding tool and a three-axis moving assembly, and the grinding tool is connected to the three-axis moving assembly.

Further, the sensing assembly includes sensing contacts and an adjustment mechanism, the adjustment mechanism includes first sliding rails and a first driving device, the first sliding rails are parallel to the machining surface of the grinding assembly, the sensing contacts are movably disposed on the first sliding rails, and the first driving device is in transmission connection with the sensing contacts.

Further, the sensing assembly further includes a limiting plate, a limiting block and a moving block, the sensing contacts are disposed on the moving block, the moving block is in moving fit with the first sliding rails, the limiting plate is disposed on one side of the first sliding rails, the limiting plate is parallel to a length direction of the first sliding rails, and the moving block is provided with the limiting block projecting towards the limiting plate and being in moving fit with the moving block.

Further, two first sliding rails are provided, and two sensing contacts are provided corresponding to the first sliding rails.

Further, the adjustment mechanism further includes an ejector device, and a driving end of the ejector device is connected to the sensing contacts to drive the sensing contacts to move towards the machining surface of the grinding assembly.

Further, the sensing assembly further includes a first housing and a baffle plate, the adjustment mechanism and the sensing contacts are disposed in the first housing, the first housing is provided with an opening facing the machining surface of the grinding assembly, and the baffle plate is rotationally connected to the opening.

Further, the baffle plate is connected to a driving end of an ejector device by means of a connecting rod.

Further, the grinding assembly further includes a second housing, a first moving seat and a second moving seat; an opening is provided in one side of the second housing close to the to-be-machined square bar, and the grinding tool is disposed at the opening; the three-axis moving assembly includes a second sliding rail, a third sliding rail, a fourth sliding rail, and corresponding driving devices; the second sliding rail parallel to the side surface of the to-be-machined square bar is disposed in the second housing, the second sliding rail is perpendicular to a length direction of the to-be-machined square bar, and the grinding tool is in moving fit with the second sliding rail; the third sliding rail is disposed on the first moving seat, the third sliding rail extends towards the side surface of the to-be-machined square bar, and one side of the second housing is in moving fit with the third sliding rail; and the fourth sliding rail is parallel to the length direction of the to-be-machined square bar, the second moving seat is connected to the first moving seat, and the second moving seat is in sliding fit with the fourth sliding rail.

Further, the clamping device is disposed between the grinding device and the loading rack; a sliding seat is disposed on one side of the grinding device, a fifth sliding rail is disposed on one side of the sliding seat close to the clamping device, the fifth sliding rail is opposite to a plurality of loading stations provided on the loading rack, and a sixth sliding rail parallel to the fifth sliding rail is disposed on an upper side of the sliding seat; and a moving seat is disposed on a lower side of the clamping device, the moving seat is in an L shape and includes a horizontal portion and a vertical portion perpendicular to each other, the vertical portion is in moving fit with the fifth sliding rail, and the horizontal portion is in moving fit with the sixth sliding rail.

Further, the clamping device includes clamping jaws, and the two clamping jaws move towards each other in opposite directions to clamp the to-be-machined square bar; and each of the clamping jaws includes first connecting plates, a second connecting plate and clamping plates, wherein two first connecting plates are provided in parallel, the second connecting plate is used for connecting the two first connecting plates, and the clamping plates are disposed on one side of the second connecting plate close to the to-be-machined square bar.

Further, the loading rack is provided with a loading seat, the loading seat includes fixing members, pulley mounting plates and limiting stoppers, the loading rack is provided with a plurality of fixing members at intervals along a length direction of the loading rack, and every two of the plurality of fixing members fall into one group; each of the fixing members is in a C shape, and includes a kidney-shaped hole locking portion and a screw locking portion parallel to an upper end surface of the loading rack, and a connecting portion perpendicular to the kidney-shaped hole locking portion and the screw locking portion, an adjustment kidney-shaped hole is provided in the kidney-shaped hole locking portion, one side of the connecting portion is connected to the pulley mounting plate, and a pulley is disposed on the pulley mounting plate; the limiting stoppers are connected to the kidney-shaped hole locking portions, the limiting stoppers are capable of moving along a length direction of the adjustment kidney-shaped holes of the kidney-shaped hole locking portions, and the two limiting stoppers abut against side surfaces of the to-be-machined square bar; and the pulley mounting plates on every two adjacent fixing members are opposite.

Further, the square bar grinding device further includes a base, a shell and control devices, wherein the shell is disposed on the base, the grinding device is disposed in the shell, at least two grinding devices are disposed on the base in a spaced manner, and the sliding seat is disposed on one side of the base facing the loading rack; the grinding devices are arranged side by side with the loading stations of the loading rack; the shell is provided with a machining port and a movable safety door corresponding to each of the grinding devices; and the control devices are electrically connected to the clamping device and the grinding device and are disposed on two sides of the shell.

The present disclosure has the following beneficial effects: the grinding tool grinding device is disposed on the loading rack, and may be clamped and transferred by the clamping device to be quickly moved to the grinding device for grinding of the grinding tool. With this solution, manual operation is not required, the structure is simple, and clamping may be achieved by using the same clamping structure for clamping the to-be-machined square bar without additionally modifying the clamping device.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of a loading rack of a square bar grinding device according to a specific implementation of the present disclosure.

FIG. 2 is an enlarged view of A in FIG. 1.

FIG. 3 is a schematic structural diagram of a second station of a loading rack of a square bar grinding device according to a specific implementation of the present disclosure.

FIG. 4 is a schematic structural diagram of a square bar grinding device with a shell removed according to a specific implementation of the present disclosure.

FIG. 5 is a schematic structural diagram of a grinding device of a square bar grinding device according to a specific implementation of the present disclosure.

FIG. 6 is a schematic structural diagram of a sensing assembly of a square bar grinding device according to a specific implementation of the present disclosure.

FIG. 7 is an enlarged view of A in FIG. 6.

FIG. 8 is a schematic structural diagram of a first housing of a square bar grinding device according to a specific implementation of the present disclosure.

FIG. 9 is a schematic diagram of cooperation of a sensing contact, a first sliding rail, a moving block and a limiting block of a square bar grinding device according to a specific implementation of the present disclosure.

FIG. 10 is a schematic structural diagram of a square bar grinding device according to a specific implementation of the present disclosure.

FIG. 11 is a schematic structural diagram of a loading rack of a square bar grinding device according to a specific implementation of the present disclosure.

FIG. 12 is a schematic structural diagram of a loading seat of a square bar grinding device according to a specific implementation of the present disclosure.

FIG. 13 is a schematic structural diagram of a clamping device of a square bar grinding device according to a specific implementation of the present disclosure.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The technical content, achieved objectives and effects of the present disclosure are described below in detail in conjunction with implementations and accompanying drawings.

Referring to FIG. 1 to FIG. 13, a square bar grinding device 3 includes a loading rack 1, a clamping device 4, a grinding device 3, and a grinding tool grinding device 2. The loading rack 1 is provided with stations. The stations include a first station 11 and a second station 12, and the first station 11 is used for placing a to-be-machined square bar. The grinding tool grinding device 2 includes an oil stone assembly 21, and the oil stone assembly 21 is disposed at the second station 12. The clamping device 4 is used for clamping and transferring the to-be-machined square bar or the oil stone assembly 21 in the stations of the loading rack 1 to the grinding device 3.

As can be seen from the above description, the present disclosure has the following beneficial effects: The grinding tool grinding device 2 is disposed on the loading rack 1, and may be clamped and transferred by the clamping device 4 to be quickly moved to the grinding device 3 for grinding of a grinding tool 314. With this solution, manual operation is not required, the structure is simple, and clamping may be achieved by using the same clamping structure for clamping the to-be-machined square bar without additionally modifying the clamping device 4.

Further, the oil stone assembly 21 includes oil stones 211 and a mounting seat 212, and the oil stones 211 are removably disposed on the mounting seat 212.

As can be seen from the above description, through the removable design of the oil stones 211 and the mounting seat 212, it is convenient for an operator to replace the oil stones 211 to ensure the grinding accuracy of the grinding tool 314; at the same time, through the design that the oil stones 211 are located on the loading rack 1 and are away from the grinding device 3, it is safer to replace the oil stones 211.

Further, the mounting seat 212 has two mounting surfaces perpendicular to an upper end surface of the loading rack 1 and parallel to two side surfaces of square bars on adjacent stations, and the oil stones 211 are disposed on the mounting surfaces.

As can be seen from the above description, with the design of the two mounting surfaces of the mounting seat 212 parallel to the side surfaces of the square bar, the clamping device 4 may quickly clamp the mounting seat 212 as clamping the to-be-machined square bar, without additional modifications.

Further, the oil stone assembly 21 further includes fixing seats 213, the fixing seats 213 are locked on the mounting surfaces, fixing grooves are provided in middle portions of the fixing seats 213, and the oil stones 211 are disposed in the fixing grooves.

As can be seen from the above description, the arrangement positions of the oil stones 211 are located by designing the fixing grooves of the fixing seats 213, and the oil stones are convenient to remove and replace subsequently by locking the fixing seats 213 on the mounting surfaces of the mounting seat 212.

Further, the oil stone 211 includes a first oil stone 211 and a second oil stone 211, the first oil stone 211 with a length direction being perpendicular to a length direction of the square bar is disposed on one of the mounting surfaces, and the second oil stone 211 with a length direction being parallel to the length direction of the square bar is disposed on the other of the mounting surfaces.

As can be seen from the above description, different grinding needs of the grinding tool 314 of the grinding device 3 are met by the arrangement of the first oil stone 211 and the second oil stone 211 at different angles.

Further, the mounting seat 212 is a cuboid.

As can be seen from the above description, by designing the mounting seat 212 as a cuboid structure similar to the shape of the to-be-machined square bar, the mounting seat is further adapted to clamping of the clamping device 4.

Further, the second station 12 is provided with two guide plates 121, and the two guide plates 121 abut against the two mounting surfaces of the mounting seat 212 respectively.

As can be seen from the above description, by using the guide plates 121 as a limiting guide on two sides of the mounting seat 212, the mounting seat 212 may be accurately arranged on the second station 12.

Further, the second station 12 is provided with an adjustment device 123 and an abutting plate 122 at two ends in a length direction of the mounting seat 212 respectively, one end of the adjustment device 123 is capable of moving towards one end in the length direction of the mounting seat 212, and the abutting plate 122 abuts against the other end in the length direction of the mounting seat 212.

As can be seen from the above description, through the cooperation of the adjustment device 123 and the abutting plate 122, the mounting seat 212 may be fixed to the second station 12 in a front-and-back limited manner, so as to avoid positional offset; and as the adjustment device 123 may be moved for adjustment, the second station may be conveniently adapted to mounting seats 212 of different lengths.

Further, the grinding device 3 includes a grinding assembly 31 and a sensing assembly 32, the sensing assembly 32 is disposed on an upper side of the grinding assembly 31, the sensing assembly 32 is capable of moving on a machining surface of the grinding assembly 31, the grinding assembly 31 includes a grinding tool 314 and a three-axis moving assembly, and the grinding tool 314 is connected to the three-axis moving assembly.

As can be seen from the above description, through the movable design of the sensing assembly 32 on the machining surface of the grinding assembly 31, there is no need to adopt a traditional form of multi-point detection by a plurality of sensing contacts 321, and a small number of sensing contacts 321 may be used to detect a plurality of measurement points by moving and adjusting, which omits the arrangement of additional sensing contacts 321 and improves the detection efficiency; and through the design of cooperation of the grinding tool 314 and the three-axis moving assembly, the grinding tool 314 may be moved in a plurality of axes, which improves the grinding flexibility of the grinding tool 314 and improves the grinding efficiency.

Further, the sensing assembly 32 includes sensing contacts 321 and an adjustment mechanism 322, the adjustment mechanism 322 includes first sliding rails 3221 and a first driving device, the first sliding rails 3221 are parallel to the machining surface of the grinding assembly 31, the sensing contacts 321 are movably disposed on the first sliding rails 3221, and the first driving device is in transmission connection with the sensing contacts 321.

As can be seen from the above description, through the arrangement of the first sliding rails 3221 and the first driving device of the adjustment mechanism 322, the sensing contacts 321 may be moved in a direction parallel to the machining surface of the grinding assembly 31.

Further, the sensing assembly 32 further includes a limiting plate 323, a limiting block 324 and a moving block 325, the sensing contacts 321 are disposed on the moving block 325, the moving block 325 is in moving fit with the first sliding rails 3221, the limiting plate 323 is disposed on one side of the first sliding rails 3221, the limiting plate 323 is parallel to a length direction of the first sliding rails 3221, and the moving block 325 is provided with the limiting block 324 projecting towards the limiting plate 323 and being in moving fit with the moving block.

As can be seen from the above description, the moving block 325 serves as a moving contact member with respect to the first sliding rails 3221, and during movement of the moving block 325, guided limiting of the moving block 325 is achieved through abutting fit between the limiting block 324 and the limiting plate 323 parallel to the first sliding rails 3221, thereby avoiding offset duration the movement.

Further, two first sliding rails 3221 are provided, and two sensing contacts 321 are provided corresponding to the first sliding rails 3221.

As can be seen from the above description, by providing the two first sliding rails 3221 and the two sensing contacts 321, the detection efficiency may be improved, and the machining time may be shortened.

Further, the adjustment mechanism 322 further includes an ejector device 3222, and a driving end of the ejector device 3222 is connected to the sensing contacts 321 to drive the sensing contacts to move towards the machining surface of the grinding assembly 31.

As can be seen from the above description, through the design of the ejector device 3222, the sensing contacts 321 may maintain pressure against a surface of the to-be-machined square bar, so as to obtain accurate dimensional data.

Further, the sensing assembly 32 further includes a first housing 326 and a baffle plate 327, the adjustment mechanism 322 and the sensing contacts 321 are disposed in the first housing 326, the first housing 326 is provided with an opening facing the machining surface of the grinding assembly 31, and the baffle plate 327 is rotationally connected to the opening.

As can be seen from the above description, the first housing 326 serves as a mounting housing for the sensing contacts 321 and the adjustment mechanism 322, and the sensing contacts 321 are housed in the first housing 326 to avoid being scratched and abraded by external foreign objects. The baffle plate 327 is designed at the opening of the first housing 326 to play a certain role in blocking external foreign objects and protection.

Further, the baffle plate 327 is connected to the driving end of the ejector device 3222 by means of a connecting rod 328.

As can be seen from the above description, by providing the connecting rod 328 to achieve the linkage of the ejector device 3222 and the rotation of the baffle plate 327, the baffle plate 327 may be rotated upwards and lifted before the sensing contacts 321 extend out of the opening of the first housing 326, so that the situation that the sensing contacts 321 collide directly with the baffle plate 327 and the service life is affected is avoided.

Further, the grinding assembly 31 further includes a second housing 311, a first moving seat 312 and a second moving seat 313. An opening is provided in one side of the second housing 311 close to the to-be-machined square bar, and the grinding tool 314 is disposed at the opening. The three-axis moving assembly includes a second sliding rail 315, a third sliding rail 316, a fourth sliding rail 317, and corresponding driving devices. The second sliding rail 315 parallel to the side surface of the to-be-machined square bar is disposed in the second housing 311, the second sliding rail 315 is perpendicular to the length direction of the to-be-machined square bar, and the grinding tool 314 is in moving fit with the second sliding rail 315. The third sliding rail 316 is disposed on the first moving seat 312, the third sliding rail 316 extends towards the side surface of the to-be-machined square bar, and one side of the second housing 311 is in moving fit with the third sliding rail 316. The fourth sliding rail 317 is parallel to the length direction of the to-be-machined square bar, the second moving seat 313 is connected to the first moving seat 312, and the second moving seat 313 is in sliding fit with the fourth sliding rail 317.

As can be seen from the above description, the second housing 311 serves as a mounting housing for the grinding tool 314 and the three-axis moving assembly. Through cooperation of the grinding tool 314 and the second sliding rail 315 that is perpendicular to the length direction of the to-be-machined square bar, adjustment of the grinding tool 314 in one axial direction is achieved under driving of the corresponding driving device. Through cooperation of the second housing 311 and the third sliding rail 316 on the first moving seat 312 on one side of the second housing, and as the third sliding rail 316 extends towards the side surface of the to-be-machined square bar, movement and feeding of the grinding tool 314 towards the to-be-machined square bar are achieved. By providing the second moving seat 313 and the fourth sliding rail 317 that is parallel to the length direction of the to-be-machined square bar, the second housing 311 and the first moving seat 312 that is connected to the second moving seat 313 may be moved up and down. Through cooperation of the three-axis moving assembly and the grinding assembly 31 described above, accurate adjustment of the grinding tool 314 in a plurality of axial directions may be achieved.

Further, the clamping device 4 is disposed between the grinding device 3 and the loading rack 1. A sliding seat 318 is disposed on one side of the grinding device 3, a fifth sliding rail 319 is disposed on one side of the sliding seat 318 close to the clamping device 4, the fifth sliding rail 319 is opposite to a plurality of loading stations provided on the loading rack 1, and a sixth sliding rail 320 parallel to the fifth sliding rail 319 is disposed on an upper side of the sliding seat 318. A moving seat 41 is disposed on a lower side of the clamping device 4, the moving seat 41 is in an L shape and includes a horizontal portion and a vertical portion perpendicular to each other, the vertical portion is in moving fit with the fifth sliding rail 319, and the horizontal portion is in moving fit with the sixth sliding rail 320.

As can be seen from the above description, through the design that the fifth sliding rail 319 is provided on one side of the sliding seat 318 close to the loading stations, and the sixth sliding rail 320 is provided on the upper side of the sliding seat 318, the two sliding rails may both bear a certain amount of pressure, thereby reducing the impact of a tilting torque; at the same time, a smaller apparatus base 5 may be well met, and the occupied space is reduced. The square bar grinding device 3 with the assembly may have a reliable service life while ensuring an accurate loading operation.

Further, the clamping device 4 includes clamping jaws 42, and the two clamping jaws 42 move towards each other in opposite directions to clamp the to-be-machined square bar. Each of the clamping jaws 42 includes first connecting plates 421, a second connecting plate 422 and clamping plates 423, where two first connecting plates 421 are provided in parallel, the second connecting plate 422 is used for connecting the two first connecting plates 421, and the clamping plates 423 are disposed on one side of the second connecting plate 422 close to the to-be-machined square bar.

As can be seen from the above description, by using the two first connecting plates 421 designed in parallel as supporting connecting plates of the clamping plate 423, the strength of the connection between the clamping plate 423 and related equipment may be improved; the second connecting plate 422 may be used as a mounting plate of the clamping plate 423 while connecting and strengthening the two first connecting plates 421; and the two clamping plates 423 move towards each other in opposite directions to clamp the to-be-machined square bar.

Further, the loading rack 1 is provided with a loading seat 125, the loading seat 125 includes fixing members 126, pulley mounting plates 127 and limiting stoppers 128, the loading rack 1 is provided with a plurality of fixing members 126 at intervals along a length direction of the loading rack, and every two of the plurality of fixing members 126 fall into one group. Each of the fixing members 126 is in a C shape, and includes a kidney-shaped hole locking portion 1261 and a screw locking portion 1263 parallel to an upper end surface of the loading rack 1, and a connecting portion 1262 perpendicular to the kidney-shaped hole locking portion 1261 and the screw locking portion 1263. An adjustment kidney-shaped hole is provided in the kidney-shaped hole locking portion 1261. One side of the connecting portion 1262 is connected to the pulley mounting plate 127, and pulleys are disposed on the pulley mounting plate 127. The limiting stoppers 128 are connected to the kidney-shaped hole locking portions 1261. The limiting stoppers 128 are capable of moving along a length direction of the adjustment kidney-shaped holes of the kidney-shaped hole locking portions 1261. The two limiting stoppers 128 abut against the side surfaces of the to-be-machined square bar. The pulley mounting plates 127 on every two adjacent fixing members 126 are opposite.

As can be seen from the above description, the C-shaped fixing members 126 are designed wand have the kidney-shaped hole locking portions 1261, the screw locking portions 1263 and the connecting portions 1262, the fixing members 126 are locked on the loading rack 1 through the screw locking portions 1263, the connecting portions 1262 serve as mounting surfaces for arrangement of the pulley mounting plates 127, and the adjustable limiting stoppers 128 on the kidney-shaped hole locking portions 1261 are adjusted to match the dimension of a square bar.

Further, the square bar grinding device further includes a base 5, a shell 6 and control devices 7; the shell 6 is disposed on the base 5, the grinding devices 3 are disposed in the shell 6, at least two grinding devices 3 are disposed on the base 5 in a spaced manner, and the sliding seat 318 is disposed on one side of the base 5 facing the loading rack 1; the grinding devices 3 are arranged side by side with the loading stations of the loading rack 1; the shell 6 is provided with a machining port and a movable safety door corresponding to each of the grinding devices 3; and the control devices 7 are electrically connected to the clamping device 4 and the grinding device 3 and are disposed on two sides of the shell 6.

As can be seen from the above description, the square bar grinding device 3 may have the reliable service life while ensuring the accurate loading operation; the plurality of grinding devices 3 are provided for roughing and finishing operations of square bars; the machine shell serves as a protective shell and prevents waste material from splashing in the process of grinding operations while avoiding the intrusion of external foreign objects; the machining ports and the movable safety doors designed for the grinding devices 3 are opened when the square bar is clamped and transferred by the clamping device 4, and are closed when the square bar is not transferred; the operation flow of the clamping device 4 and the grinding devices 3 is controlled by the control devices 7; and as the control devices 7 are disposed on the two sides of the shell 6, a reasonable layout of the overall structure is achieved.

Embodiment 1

Application scenarios: a grinding tool of an existing grinding device 3 needs to be ground with an oil stone 211 in the grinding maintenance process, however, the conventional oil stone 211 is not convenient to arrange, and it is dangerous for an operator to maintain and replace the oil stone 211 at the grinding device 3; and a transmission mechanism corresponding to the oil stone 211 needs to be additionally configured, which makes the design relatively complicated.

As shown in FIG. 1 to FIG. 3, a square bar grinding device 3 of this embodiment includes a loading rack 1, a clamping device 4, a grinding device 3, and a grinding tool grinding device 2. The loading rack 1 is provided with stations. The stations include a plurality of first stations 11 and at least one second station 12, and the first stations 11 are used for placing to-be-machined square bars. The grinding tool grinding device 2 includes an oil stone assembly 21, and the oil stone assembly 21 is disposed at the second station 12. The clamping device 4 is used for clamping and transferring the to-be-machined square bars or the oil stone assembly 21 in the stations of the loading rack 1 to the grinding device 3.

Specifically, the oil stone assembly 21 includes oil stones 211, fixing seats 213 and a mounting seat 212.

As shown in FIG. 1 and FIG. 2, the mounting seat 212 is a cuboid similar to the to-be-machined square bars, and is defined by connecting a plurality of plates. The mounting seat 212 has two mounting surfaces perpendicular to an upper end surface of the loading rack 1 and parallel to two side surfaces of square bars on adjacent stations, the fixing seats 213 are locked on the mounting surfaces, fixing grooves are provided in middle portions of the fixing seats 213, and the oil stones 211 are removably disposed in the fixing grooves. The mounting seat 212 is made of simple plates, and the overall structure is easy and fast to process. The cooperation between the oil stones 211 and the fixing seats 213 and the removable design of the oil stones may facilitate quick removable and replacement by the operator.

As shown in FIG. 2, the oil stone 211 includes a first oil stone 211 and a second oil stone 211, the first oil stone 211 with a length direction being perpendicular to a length direction of the square bar is disposed on one of the mounting surfaces, and the second oil stone 211 with a length direction being parallel to the length direction of the square bar is disposed on the other of the mounting surfaces. The different grinding needs of the grinding tool 314 are met through the oil stones 211 at different angles.

As shown in FIG. 3, the second station 12 is provided with two guide plates 121, and the two guide plates 121 abut against the two mounting surfaces of the mounting seat 212 respectively. The guide plates 121 are used to limit the two sides of the mounting seat 212 to ensure that the mounting seat may be accurately clamped by the clamping device 4 subsequently. The second station 12 is provided with a raised base 5124, and the mounting seat 212 is disposed on the raised base 5124. The height of the mounting seat 212 is increased by means of the raised base 5124, so that the mounting seat may be clamped by the clamping device 4, and at the same time, the design size of the mounting seat 212 may be decreased.

The second station 12 is provided with an adjustment device 123 and an abutting plate 122 at two ends in a length direction of the mounting seat 212 respectively, one end of the adjustment device 123 is capable of moving towards one end in the length direction of the mounting seat 212, and the abutting plate 122 abuts against the other end in the length direction of the mounting seat 212. The front end and the rear end of the mounting seat 212 are limited and fixed by the adjustment device 123 and the abutting plate 122, and as the adjustment device 123 may be moved for adjustment, the second station may be adapted to mounting seats 212 of different lengths.

Principle of operation: during normal machining, the clamping device 4 clamps the to-be-machined square bars at the first stations 11 of the loading rack 1 and transfers same to the grinding device 3 for machining; and when the grinding tool 314 of the grinding device 3 needs grinding maintenance, similarly, the clamping device 4 clamps the grinding tool grinding device 2 at the second station 12 of the loading rack 1 and transfers same to the grinding device 3 for grinding of the grinding tool 314.

Embodiment 2

Application scenarios: In a current square bar grinding system, a loading rack 1, a clamping device 4 and a grinding apparatus are generally used in cooperation to achieve the processes of loading, grinding, unloading, etc. of square bars. For the grinding apparatus, during machining, the surface of a square bar needs to be detected through detection devices such as a sensing contact 321, and a clamping device 4 is used to adjust the position of the square bar to ensure the subsequent grinding accuracy. During operation of the existing grinding apparatus, a plurality of sensing contacts 321 are needed to carry out contact detection on side surfaces of a single square bar, and as the sensing contacts 321 are high in cost, the purchase cost of the overall system is greatly increased due to the arrangement of the plurality of sensing contacts 321. At the same time, a grinding tool 314 of the existing grinding apparatus has poor movement flexibility and may not be moved in multiple axial directions to adjust a grinding area, thereby failing to improve the grinding efficiency.

As shown in FIG. 4 to FIG. 9, the grinding device 3 of the square bar grinding device 3 of this embodiment includes a grinding assembly 31 and a sensing assembly 32, the sensing assembly 32 is disposed on an upper side of the grinding assembly 31, and the sensing assembly 32 is capable of moving on a machining surface of the grinding assembly 31.

Specifically, the sensing assembly 32 includes sensing contacts 321, an adjustment mechanism 322, a limiting plate 323, a limiting block 324, a moving block 325, a first housing 326, and a baffle plate 327.

As shown in FIG. 5, FIG. 6, FIG. 7 and FIG. 8, the adjustment mechanism 322 includes first sliding rails 3221, a first driving device and an ejector device 3222. The first sliding rails 3221 are parallel to the machining surface of the grinding assembly 31, the sensing contacts 321 are movably disposed on the first sliding rails 3221, and the first driving device is in transmission connection with the sensing contacts 321. Optionally, the first driving device is a rodless cylinder. In the same length direction, two first sliding rails 3221 are provided in a spaced manner, and two sensing contacts 321 are provided corresponding to the first sliding rails 3221. The specific number of the sensing contacts 321 may be designed according to the actual demand. With the design of the double sliding rails and the double sensing contacts 321, detection efficiency is ensured to a certain extent while reducing the cost.

The sensing contacts 321 are disposed on the moving block 325, and the moving block 325 is in moving fit with the first sliding rails 3221. The limiting plate 323 is disposed on one side of the first sliding rails 3221, and the limiting plate 323 is parallel to a length direction of the first sliding rails 3221. The limiting plate 323 includes a first limiting plate 323 and a second limiting plate 323. The moving block 325 includes a first moving block 325 and a second moving block 325. The first limiting plate 323 is disposed on an upper side of the moving block 325, and an upper end of the moving block 325 is provided with a first limiting block 324 corresponding to the first limiting plate 323. The second limiting plate 323 is disposed on a lower side of the moving block 325, and a lower end of the moving block 325 is provided with a second limiting block 324 corresponding to the second limiting plate 323.

A driving end of the ejector device 3222 is connected to the sensing contacts 321 to drive the sensing contacts to move towards the machining surface of the grinding assembly 31. Specifically, the sensing contacts 321, the adjustment mechanism 322, the limiting plate 323, the limiting block 324 and the moving block 325 are all disposed in an internal housing capable of moving in the first housing 326, and the driving end of the ejector device 3222 is in transmission connection with the internal housing.

The adjustment mechanism 322, the sensing contacts 321, the limiting plate 323, the limiting block 324 and the moving block 325 are all disposed in the first housing 326, the first housing 326 is provided with an opening facing the machining surface of the grinding assembly 31, and the baffle plate 327 is rotationally connected to the opening. The baffle plate 327 is connected to the driving end of the ejector device 3222 by means of a connecting rod 328. Specifically, the ejector device 3222 includes at least three cylinders, one of the cylinders is used for driving the sensing contacts 321 and components connected therewith to reciprocate towards the opening, and the other two of the cylinders are connected to the connecting rod 328. When the sensing contacts 321 are driven by the ejector device 3222 to move toward the to-be-machined square bar, the connecting rod 328 is also driven by the ejector device 3222 to rotate the baffle plate 327.

As shown in FIG. 4 and FIG. 5, the grinding assembly 31 includes a grinding tool 314, a three-axis moving assembly, a second housing 311, a first moving seat 312, and a second moving seat 313. The first housing 326 is disposed on the upper side of the second housing 311. An opening is provided in one side of the second housing 311 close to the to-be-machined square bar, and the grinding tool 314 is disposed at the opening. The three-axis moving assembly includes a second sliding rail 315, a third sliding rail 316, a fourth sliding rail 317, and corresponding driving devices. The second sliding rail 315 parallel to the side surface of the to-be-machined square bar is disposed in the second housing 311, the second sliding rail 315 is perpendicular to the length direction of the to-be-machined square bar, and the grinding tool 314 is in moving fit with the second sliding rail 315. The third sliding rail 316 is disposed on the first moving seat 312, the third sliding rail 316 extends towards the side surface of the to-be-machined square bar, and one side of the second housing 311 is in moving fit with the third sliding rail 316. The fourth sliding rail 317 is parallel to the length direction of the to-be-machined square bar, the second moving seat 313 is connected to the first moving seat 312, and the second moving seat 313 is in sliding fit with the fourth sliding rail 317.

The operation principle of the present disclosure: when the to-be-machined square bar is transferred to the grinding apparatus, the ejector device 3222 and the adjustment mechanism 322 of the sensing assembly 32 drive the sensing contacts 321 to abut against the surface of the square bar, and drive the sensing contacts 321 to move on the surface of the square bar to detect dimension data of a plurality of measurement points. The grinding volume of the grinding assembly 31 is then adjusted on the basis of the above measured dimensional data. At the same time, the grinding tool 314 of the grinding assembly 31 cooperates with the three-axis moving assembly, and may be flexibly adjusted in multiple axes, thereby improving the grinding efficiency.

Embodiment 3

Application scenarios: in a current square bar grinding device 3, a loading rack 1, a clamping device 4 and a grinding device 3 are generally used in cooperation to achieve the processes of loading, grinding, unloading, etc. of square bars. In the existing square bar grinding device 3, the clamping device 4 moves in cooperation with a sliding rail disposed on one side of the grinding device 3, so as to transfer to-be-machined square bars on different stations on the loading rack 1. The conventional design of the sliding rail is up-and-down double sliding rails, the clamping device 4 cooperates with the up-and-down double sliding rails through a C-shaped base 5. However, due to such cooperation form of the sliding rails and the base 5, the double rails are disposed on the side, and the sliding rail on the upper side bears the main tilting moment, so that the two sliding rails may be inconsistent in service life, and an error of the movement accuracy may be present after long-term use, which has an impact on the machining accuracy. If both sliding rails are horizontally disposed over the base, the apparatus base 5 may be widened, and the occupied area is enlarged.

As shown in FIG. 10 to FIG. 13, in the square bar grinding device 3 of this embodiment, the clamping device 4 is disposed between the grinding device 3 and a loading device. A sliding seat 318 is disposed on one side of the grinding device 3, a fifth sliding rail 319 is disposed on one side of the sliding seat 318 close to the clamping device 4, the fifth sliding rail 319 is opposite to a plurality of loading stations, and a sixth sliding rail 320 parallel to the fifth sliding rail 319 is disposed on an upper side of the sliding seat 318. A moving seat 41 is disposed on a lower side of the clamping device 4, the moving seat 41 is in an L shape and includes a horizontal portion and a vertical portion perpendicular to each other, the vertical portion is in moving fit with the fifth sliding rail 319, and the horizontal portion is in moving fit with the sixth sliding rail 320.

As shown in FIG. 13, the clamping device 4 includes clamping jaws 42, a correction block 45, a clamping driving device 43, an up-and-down moving device for the clamping jaws 42, a moving device, and a rotating device.

The two clamping jaws 42 move towards each other in opposite directions to clamp the to-be-machined square bar, and the clamping jaws 42 are provided with detection sensors 46. The correction block 45 is disposed between the two clamping jaws 42, and the correction block 45 abuts against one surface of the to-be-machined square bar perpendicular to the side surfaces opposite to the clamping jaws 42. The clamping jaw 42 includes first connecting plates 421, a second connecting plate 422, and clamping plates 423. Two first connecting plates 421 are provided in parallel, and the first connecting plates 421 are in a right-angled triangle shape. Inclined notches are provided in one sides of the first connecting plates 421. The second connecting plate 422 is used for connecting the two first connecting plates 421. The clamping plates 423 are disposed on one side of the second connecting plate 422 close to the to-be-machined square bar, and two clamping plates are provided in a length direction of the second connecting plate 422 in a spaced manner.

The clamping jaws 42 include first clamping jaws 42 and second clamping jaws 42, and the first clamping jaws 42 and the second clamping jaws 42 are arranged up and down. The clamping driving device 43 drives the two first clamping jaws 42 and the two second clamping jaws 42 to move toward each other in opposite directions. The up-and-down moving device for the clamping jaws 42 is used for adjusting the relative positions of the first clamping jaws 42 and the second clamping jaws 42 in the length direction of the to-be-machined square bar. In this embodiment, the up-and-down moving device for the clamping jaws 42 may adjust the first clamping jaws 42 and the second clamping jaws 42 by moving through cooperation of a screw rod and a nut base. The moving device is used for moving the clamping jaws 42 towards the square bar. The rotating device is used for rotating the clamping jaws 42 facing the loading device to face the grinding device 3.

As shown in FIG. 11 and FIG. 12, the loading rack 1 is provided with a loading seat 125, the loading seat 125 is provided with a plurality of pulleys along a length direction thereof, and the to-be-machined square bar is placed on the pulleys. An adjustment device 123 and an abutting plate are disposed at two ends in the length direction of the loading seat 125 respectively. One end of the adjustment device 123 moves along the length direction of the loading seat 125. The adjustment device 123 and the abutting plate abut against the two ends of the placed square bar respectively for limiting, so as to adapt to the length of the square bar. Specifically, the limiting block 324 is provided on one side of the abutting plate facing the adjustment device 123, and the limiting block 324 abuts against the end portion of the square bar.

The adjustment device 123 may adopt a manner of cooperation between a push plate and a pushing cylinder, where the pushing cylinder pushes the push plate to one end of the to-be-machined square bar, and the pushing distance of the pushing cylinder is adjusted by related control devices 7 to match different lengths of square bars. In this embodiment, the adjustment device 123 adopts another adjustment structure design, and includes a push plate and an adjustment block, where the adjustment block is locked on the loading rack 1, the push plate is disposed at one end of the adjustment block, the push plate is provided with a moving rod extending towards the adjustment block, the adjustment block is provided with a moving hole corresponding to the moving rod, and the push plate moves close to or away from the adjustment block by manually adjusting the position of the moving rod in the moving hole. At the same time, the push plate is in an L shape, a vertical portion thereof is used for abutting against the to-be-machined square bar, a horizontal portion is capable of moving on the loading rack 1, the horizontal portion is provided with a kidney-shaped hole with a length direction parallel to the movement direction of the push plate, and a bolt for fixing the push plate is locked in the kidney-shaped hole. After the push plate is moved, the push plate and the loading rack 1 are fixed by locking the bolt in the kidney-shaped hole.

The loading seat 125 includes fixing members 126, pulley mounting plates 127 and limiting stoppers 128, the loading rack 1 is provided with a plurality of fixing members 126 at intervals along a length direction of the loading rack, and every two of the plurality of fixing members 126 fall into one group. Each of the fixing members 126 is in a C shape, and includes a kidney-shaped hole locking portion 1261 and a screw locking portion 1263 parallel to an upper end surface of the loading rack 1, and a connecting portion 1262 perpendicular to the kidney-shaped hole locking portion 1261 and the screw locking portion 1263, an adjustment kidney-shaped hole is provided in the kidney-shaped hole locking portion 1261, one side of the connecting portion 1262 is connected to the pulley mounting plate 127, and pulleys are disposed on the pulley mounting plate 127; the limiting stoppers 128 are connected to the kidney-shaped hole locking portions 1261, the limiting stoppers 128 are capable of moving along a length direction of the adjustment kidney-shaped holes of the kidney-shaped hole locking portions 1261, and the two limiting stoppers 128 abut against the side surfaces of the to-be-machined square bar; and the pulley mounting plates 127 on every two adjacent fixing members 126 are opposite.

When the loading rack 1 is placed horizontally, after the to-be-machined square bar is transferred to the loading rack 1 by manual lifting or after the square bar subjected to grinding is turned over and placed flat on the loading rack 1, the square bar is prevented from rolling out of the loading rack along the end portion and falling off by designing the abutting plate at the end portion of the loading rack 1. The height of the abutting plate may be 10 mm higher than the height of pulley surfaces of the pulleys.

As shown in FIG. 10, the square bar grinding device further includes a base 5, a shell 6 and control devices 7; the shell 6 is disposed on the base 5, the grinding devices 3 are disposed in the shell 6, at least two grinding devices 3 are disposed on the base 5 in a spaced manner, and the sliding seat 318 is disposed on one side of the base 5 facing the loading rack 1; the grinding devices 3 are arranged side by side with the loading stations of the loading rack 1; the shell 6 is provided with a machining port and a movable safety door corresponding to each of the grinding devices 3; and the control devices 7 are electrically connected to the clamping device 4 and the grinding device 3 and are disposed on two sides of the shell 6.

The working principle of the present disclosure: firstly, the operator transfers the to-be-machined square bar to the loading device by manual lifting, then the pulleys on the loading rack 1 bear the square bar, the adjustment device 123 and the abutting plate abut against the two ends in the length direction of the square bar for limiting, and one end of the adjustment device 123 is moved for adjustment to adapt to the length of the square bar; the two fixing members 126 on the loading rack 1 are connected to the loading rack 1 through the screw locking portions 1263 due to the C-shaped design, the connecting portions 1262 serve as mounting positions of the pulley mounting plates 127, and the kidney-shaped hole locking portions 1261 cooperate with the limiting stoppers 128 to achieve adaption to square bars of different dimensions.

When the clamping device 4 is used for clamping, the square bar at the loading station is lifted from a horizontal state to a vertical state by a jacking mechanism on the loading device, in this case, the clamping device 4 is moved toward the square bar under control of the moving device, the clamping position of the square bar is determined through the up-and-down moving device for the clamping jaws 42, and the clamping jaws 42 clamp the square bar through the clamping driving device 43. With the design of the clamping plates 423, the first connecting plates 421 and the second connecting plates 422 of the clamping jaws 42, the clamping accuracy is ensured. By means of the fifth sliding rail 319, the sixth sliding rail 320, the moving seat 41 and the corresponding driving devices, the clamping device 4 is then accurately moved to the needed grinding device 3, and releases the clamping jaws 42 to place the square bar at the machining area of the grinding device 3 for machining.

In summary, according to the square bar grinding device provided by the present disclosure, the grinding tool grinding device is disposed on the loading rack, and may be clamped and transferred by the clamping device to be quickly moved to the grinding device for grinding of the grinding tool. With this solution, manual operation is not required, the structure is simple, and clamping may be achieved by using the same clamping structure for clamping the to-be-machined square bar without additionally modifying the clamping device.

The above are merely embodiments of the present disclosure, and are not intended to limit the scope of the patent of the present disclosure. Any equivalent transformation made by utilizing the contents of the specification and accompanying drawings of the present disclosure, or directly or indirectly applying them in the related technical fields, similarly fall within the protection scope of the patent of the present disclosure.

Claims

1. A square bar grinding device, comprising a loading rack, a clamping device, a grinding device, and a grinding tool grinding device, wherein the loading rack is provided with stations, the stations comprise a first station and a second station, the first station is used for placing a to-be-machined square bar, the grinding tool grinding device comprises an oil stone assembly, the oil stone assembly is disposed at the second station, and the clamping device is used for clamping and transferring the to-be-machined square bar or the oil stone assembly in the stations of the loading rack to the grinding device.

2. The square bar grinding device according to claim 1, wherein the oil stone assembly comprises oil stones and a mounting seat, and the oil stones are removably disposed on the mounting seat.

3. The square bar grinding device according to claim 2, wherein the mounting seat has two mounting surfaces perpendicular to an upper end surface of the loading rack and parallel to two side surfaces of square bars on adjacent stations, and the oil stones are disposed on the mounting surfaces.

4. The square bar grinding device according to claim 3, wherein the oil stone assembly further comprises fixing seats, the fixing seats are locked onto the mounting surfaces, fixing grooves are provided in middle portions of the fixing seats, and the oil stones are disposed in the fixing grooves.

5. The square bar grinding device according to claim 3, wherein the oil stone comprises a first oil stone and a second oil stone, the first oil stone with a length direction being perpendicular to a length direction of the square bar is disposed on one of the mounting surfaces, and the second oil stone with a length direction being parallel to the length direction of the square bar is disposed on the other of the mounting surfaces.

6. The square bar grinding device according to claim 3, wherein the mounting seat is a cuboid.

7. The square bar grinding device according to claim 3, wherein the second station is provided with two guide plates, and the two guide plates abut against the two mounting surfaces of the mounting seat respectively.

8. The square bar grinding device according to claim 7, wherein the second station is provided with an adjustment device and an abutting plate at two ends in a length direction of the mounting seat respectively, one end of the adjustment device is capable of moving towards one end in the length direction of the mounting seat, and the abutting plate abuts against the other end in the length direction of the mounting seat.

9. The square bar grinding device according to claim 1, wherein the grinding device comprises a grinding assembly and a sensing assembly, the sensing assembly is disposed on an upper side of the grinding assembly, the sensing assembly is capable of moving on a machining surface of the grinding assembly, the grinding assembly comprises a grinding tool and a three-axis moving assembly, and the grinding tool is connected to the three-axis moving assembly.

10. The square bar grinding device according to claim 9, wherein the sensing assembly comprises sensing contacts and an adjustment mechanism, the adjustment mechanism comprises first sliding rails and a first driving device, the first sliding rails are parallel to the machining surface of the grinding assembly, the sensing contacts are movably disposed on the first sliding rails, and the first driving device is in transmission connection with the sensing contacts.

11. The square bar grinding device according to claim 10, wherein the sensing assembly further comprises a limiting plate, a limiting block and a moving block, the sensing contacts are disposed on the moving block, the moving block is in moving fit with the first sliding rails, the limiting plate is disposed on one side of the first sliding rails, the limiting plate is parallel to a length direction of the first sliding rails, and the moving block is provided with the limiting block projecting towards the limiting plate and being in moving fit with the moving block.

12. The square bar grinding device according to claim 10, wherein two first sliding rails are provided, and two sensing contacts are provided corresponding to the first sliding rails.

13. The square bar grinding device according to claim 10, wherein the adjustment mechanism further comprises an ejector device, and a driving end of the ejector device is connected to the sensing contacts to drive the sensing contacts to move towards the machining surface of the grinding assembly.

14. The square bar grinding device according to claim 12, wherein the sensing assembly further comprises a first housing and a baffle plate, the adjustment mechanism and the sensing contacts are disposed in the first housing, the first housing is provided with an opening facing the machining surface of the grinding assembly, and the baffle plate is rotationally connected to the opening.

15. The square bar grinding device according to claim 14, wherein the baffle plate is connected to a driving end of an ejector device by means of a connecting rod.

16. The square bar grinding device according to claim 9, wherein the grinding assembly further comprises a second housing, a first moving seat and a second moving seat; an opening is provided in one side of the second housing close to the to-be-machined square bar, and the grinding tool is disposed at the opening; the three-axis moving assembly comprises a second sliding rail, a third sliding rail, a fourth sliding rail, and corresponding driving devices; the second sliding rail parallel to the side surface of the to-be-machined square bar is disposed in the second housing, the second sliding rail is perpendicular to a length direction of the to-be-machined square bar, and the grinding tool is in moving fit with the second sliding rail; the third sliding rail is disposed on the first moving seat, the third sliding rail extends towards the side surface of the to-be-machined square bar, and one side of the second housing is in moving fit with the third sliding rail; and the fourth sliding rail is parallel to the length direction of the to-be-machined square bar, the second moving seat is connected to the first moving seat, and the second moving seat is in sliding fit with the fourth sliding rail.

17. The square bar grinding device according to claim 1, wherein the clamping device is disposed between the grinding device and the loading rack; a sliding seat is disposed on one side of the grinding device, a fifth sliding rail is disposed on one side of the sliding seat close to the clamping device, the fifth sliding rail is opposite to a plurality of loading stations provided on the loading rack, and a sixth sliding rail parallel to the fifth sliding rail is disposed on an upper side of the sliding seat; and a moving seat is disposed on a lower side of the clamping device, the moving seat is in an L shape and comprises a horizontal portion and a vertical portion perpendicular to each other, the vertical portion is in moving fit with the fifth sliding rail, and the horizontal portion is in moving fit with the sixth sliding rail.

18. The square bar grinding device according to claim 17, wherein the clamping device comprises clamping jaws, and the two clamping jaws move towards each other in opposite directions to clamp the to-be-machined square bar; and each of the clamping jaws comprises first connecting plates, a second connecting plate and clamping plates, wherein two first connecting plates are provided in parallel, the second connecting plate is used for connecting the two first connecting plates, and the clamping plates are disposed on one side of the second connecting plate close to the to-be-machined square bar.

19. The square bar grinding device according to claim 18, wherein the loading rack is provided with a loading seat, the loading seat comprises fixing members, pulley mounting plates and limiting stoppers, the loading rack is provided with a plurality of fixing members at intervals along a length direction of the loading rack, and every two of the plurality of fixing members fall into one group; each of the fixing members is in a C shape, and comprises a kidney-shaped hole locking portion and a screw locking portion parallel to an upper end surface of the loading rack, and a connecting portion perpendicular to the kidney-shaped hole locking portion and the screw locking portion, an adjustment kidney-shaped hole is provided in the kidney-shaped hole locking portion, one side of the connecting portion is connected to the pulley mounting plate, and a pulley is disposed on the pulley mounting plate; the limiting stoppers are connected to the kidney-shaped hole locking portions, the limiting stoppers are capable of moving along a length direction of the adjustment kidney-shaped holes of the kidney-shaped hole locking portions, and the two limiting stoppers abut against side surfaces of the to-be-machined square bar; and the pulley mounting plates on every two adjacent fixing members are opposite.

20. The square bar grinding device according to claim 17, further comprising a base, a shell and control devices, wherein the shell is disposed on the base, the grinding device is disposed in the shell, at least two grinding devices are disposed on the base in a spaced manner, and the sliding seat is disposed on one side of the base facing the loading rack; the grinding devices are arranged side by side with the loading stations of the loading rack; the shell is provided with a machining port and a movable safety door corresponding to each of the grinding devices; and the control devices are electrically connected to the clamping device and the grinding device and are disposed on two sides of the shell.